David:
You hit the nail pretty squarely on the head with minor exceptions.
Quote:
Originally Posted by n86121
b) If you want to loaf along at low power and fuel flow, then just throttle back, bring the turbos almost idle, and you have a regularly aspirated engine.
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If you operate the like a non-turbo, I speculate the engines work just like a non-turbo. MP is MP.
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Well, the turbos don't really go to idle, but they do slow down, BUT you do not have a "regularly" aspirated engine. The low compression pistons are not nearly as efficient as the normally aspirated model's higher compression pistons. To make matters worse, the increased exhaust back pressure from throttling back reduces the volumetric efficiency of the cylinders so MP is not really MP where the number of air molecules are concerned (increased IAT, too). Turbocharged engines are more efficient at higher MPs than lower MPs.
However, your points are well taken and I agree with your basic premise that turbos are hard to beat for flexibility and capability.